"ONCE IN A BLUE MOON" -Photograph of crystalline phenylethylamine found in chocolate and lactic acid found in wine"Once in a Blue Moon" would be a striking addition to any space with its contrasting color and form. Phenylethylamine crystals, a substance found in chocolate, and lactic acid, which is found in wine were co crystallized then photographed through a microscope. The crystals create the colors by the refraction as it passes through the prism like crystalline patterns.